diff --git a/build-constraints.yaml b/build-constraints.yaml
index a5ebffa1..79576721 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2454,6 +2454,7 @@ packages:
         - pathwalk
 
     "John Galt <jgalt@centromere.net> @centromere":
+        - cacophony
         - blake2
         - nfc < 0 # build failure with GHC 8.4